Pith Number

pith:LD7JQQZQ

pith:2021:LD7JQQZQU6U47T3FA2TZBWWPZV

not attested not anchored not stored refs pending

Expanding the time domain of multiple populations: evidences of nitrogen variations in the ~1.5 Gyr old star cluster NGC 1783

A. Mucciarelli, E. Dalessandro, I. Cabrera-Ziri, M. Cadelano, M. Salaris, N. Bastian, S. Martocchia, S. Saracino

arxiv:2112.06964 v1 · 2021-12-13 · astro-ph.GA · astro-ph.SR

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LD7JQQZQU6U47T3FA2TZBWWPZV}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-07-05T03:47:47.239695Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

58fe984330a7a9cfcf6506a790dacfcd4f520e1af8f9560deddb0d4cd82f4007

Aliases

arxiv: 2112.06964 · arxiv_version: 2112.06964v1 · doi: 10.48550/arxiv.2112.06964 · pith_short_12: LD7JQQZQU6U4 · pith_short_16: LD7JQQZQU6U47T3F · pith_short_8: LD7JQQZQ

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/LD7JQQZQU6U47T3FA2TZBWWPZV \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 58fe984330a7a9cfcf6506a790dacfcd4f520e1af8f9560deddb0d4cd82f4007

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b790363ff534094bcb5c233852c083ab2f5c205f9a949904ae9f6d3b341c1d20",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-12-13T19:04:39Z",
    "title_canon_sha256": "25893d29783ad4e869f00ecbc22b8e69cde37dc651b25455025c0a382d9880c1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2112.06964",
    "kind": "arxiv",
    "version": 1
  }
}